Question

The nuclei of large atoms, such as uranium, with 92 protons, can
bemodeled as sperically symmetric spheres of charge. The radius
ofthe uranium nucleus is approximately 7.4x10-15 m.
(a)What is the electric field this nucleus produces just outside
itssurface? (b) What magnitude of electric field does it produce
atthe distance of the electrons, which is about
1.0x10-10m? (c) The electrons can be modeled as forming
a uniform shell ofnegative charge. What net electric field do they
produce at thelocation of the nucleus?